Influence of milling conditions on the FeAl intermetallic formation by mechanical alloying

Effect of boron on structural and magnetic properties of the Fe60Al40 system prepared by mechanical alloying

“…Fig. 4 shows the Mössbauer spectra obtained at 300 K for samples milled for 12 and 24 h. For the samples without B, a spectrum with broadened lines, characteristic of disordered alloys is observed, but it slightly differs from those reported in literature [14], because of the different milling conditions. When B is added, lines 1 and 6 become more pronounced due to the appearance of the new Fe 2 B phase, being more evident at 10 at.% milled for 12 h than at 20 at.% B milled for 24 h. A first fit model of the spectra involving a hyperfine field distribution gives rise to an acceptable agreement.…”

Magnetic properties and thermal ordering of mechanically alloyed Fe–40at% Al

“…However, less has been reported on MA of Fe-Al alloys [51][52][53], especially the effect of thermal ordering on magnetic properties. MA is distinct from MM in that the former combines two initially separate components, whereas MM starts with the alloy, which becomes progressively disordered during milling.…”

Nanostructure and Phases Formation under Mechanical Alloying of Bynary Powder Mixtures of Fe and sp-Element (M); M = C,B,Al,Si,Ge,Sn

“…The phase contains 70-80 at.% of Al, as in annealing it is transformed into intermetallic Fe 2 Al 5 [51,52,56,60,61]. Further this phase will be referred to as Am(Fe 2 Al 5 ); c. It is established that the formation of the SSS α-Fe(Al) as a final product of MA takes place with x ≤ 60 at.% Al though in a number of papers the formation of SSS was found with x = 75 at.% Al [55][56][57]; d. It was shown [58,64] that the composition of SSS from the very beginning of its formation is close to that of the initial mixture; e. Comparative study of the mechanisms and kinetics of SSRs in the Fe-Al and Fe-Si systems with equal compositions of initial mixtures and conditions of mechanical treatment has not been carried out yet.…”

“…MA in the Fe-Al system with the Al content in the initial mixtures x from 10 to 90 at.% has been intensively studied for the past 15 years [33,. In most detail the type and mechanisms of SSRs were investigated for the mixtures with x ≥ 50 at.% Al [47-53, 55 56] and close to the stoichiometric composition Fe(75)Al (25) [33,52,54,56,58,64,67]. The analysis of the published results leads to the following conclusions: a. MA takes place in the conditions on reaching the nanostructure state (<L> ≤ 10 nm); b.…”